mirror of
https://github.com/DCC-EX/CommandStation-EX.git
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54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/*
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* (c) 2021 Fred Decker. All rights reserved.
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*
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* This file is part of CommandStation-EX
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef FSH_h
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#define FSH_h
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/* This is an architecture support file to manage the differences
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* between the nano/uno.mega and the later nanoEvery, unoWifiRev2 etc
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*
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* IMPORTANT:
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* To maintain portability the main code should NOT contain ANY references
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* to the following:
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*
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* __FlashStringHelper Use FSH instead.
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* PROGMEM use FLASH instead
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* pgm_read_byte_near use GETFLASH instead.
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* pgm_read_word_near use GETFLASHW instead.
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*
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*/
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#include <Arduino.h>
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#if defined(ARDUINO_ARCH_MEGAAVR)
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#ifdef F
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#undef F
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#endif
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#define F(str) (str)
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typedef char FSH;
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#define GETFLASH(addr) (*(const unsigned char *)(addr))
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#define GETFLASHW(addr) (*(const unsigned short *)(addr))
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#define FLASH
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#define strlen_P strlen
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#define strcpy_P strcpy
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#else
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typedef __FlashStringHelper FSH;
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#define GETFLASH(addr) pgm_read_byte_near(addr)
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#define GETFLASHW(addr) pgm_read_word_near(addr)
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#define FLASH PROGMEM
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#endif
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#endif
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